CVE-2025-21699: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag Truncate an inode's address space when flipping the GFS2_DIF_JDATA flag: depending on that flag, the pages in the address space will either use buffer heads or iomap_folio_state structs, and we cannot mix the two.

Affected products

• Linux Linux Kernel: before 5.4.290 (fixed in 5.4.290); from 5.5, before 5.10.234 (fixed in 5.10.234); from 5.11, before 5.15.178 (fixed in 5.15.178); from 5.16, before 6.1.128 (fixed in 6.1.128); from 6.2, before 6.6.75 (fixed in 6.6.75); from 6.7, before 6.12.12 (fixed in 6.12.12); …

Published 2025-02-12. Last modified 2026-07-30.